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The Meritor MD2014X-370 is a powerful and dependable tandem rear-drive axle differential, purpose-built for Class 8 trucks operating in demanding vocational, regional, and construction applications. With a 3.70 gear ratio, this differential is designed to provide maximum torque and traction, making it an excellent choice for trucks hauling heavy loads, navigating hilly terrain, or working in off-road or stop-and-go environments.

As part of Meritor’s durable and field-proven MD2014X series, the MD2014X-370 features a robust modular carrier, hypoid gearing for smooth power transfer, and compatibility with a wide range of suspensions and brake systems. It’s engineered for long service life, minimal maintenance, and optimal performance under load.

Key Features
  • Model: MD2014X-370
  • Series: Meritor MD2014X – Tandem Drive Axle Series
  • Axle Capacity: 40,000 lbs (20,000 lbs per axle)
  • Gear Ratio: 3.70:1
  • Differential Type: Standard open (non-locking)
  • Carrier Assembly: Top-mount modular design for easy servicing
  • Design Purpose: High-torque vocational and regional applications
Benefits & Applications
  • High-Torque Gear Ratio: The 3.70:1 gear ratio provides excellent pulling power for heavy hauling and rugged terrain
  • Built to Last: Designed for durability under full-load and continuous-use conditions
  • Versatile Performance: Suitable for regional haul, construction, refuse, and other heavy-duty applications
  • Easy to Service: Modular top-load carrier simplifies repairs and reduces vehicle downtime
  • OEM Compatible: Engineered to factory specifications for a wide range of Class 8 trucks

At General Truck Parts, we offer both new and remanufactured Meritor MD2014X-370 differentials, all rebuilt to OEM standards with high-quality components. Our reman units are dyno-tested, inspected, and backed by warranty to ensure dependable on-road performance.

Need help finding the correct differential for your application? Our experienced team is here to assist with fitment checks, VIN lookups, and fast, reliable quotes. Request a Quote or call us today for availability and pricing.

Technical Specifications:
  • Axle Model: MD2014X-370
  • Configuration: Tandem rear-drive axle
  • GAWR (Gross Axle Weight Rating): 40,000 lbs
  • Gear Ratio: 3.70:1
  • Differential Style: Open (non-locking)
  • Input Spline Count: Typically 39 or 41 splines (confirm with OEM spec)
  • Gear Design: Hypoid gearing for strength and quiet operation
  • Lubrication: Oil bath system – 85W-140 gear oil recommended
  • Brake Compatibility: Fits 16.5″ S-cam drum brakes and air disc brakes
  • Suspension Compatibility: Works with multi-leaf, air ride, and vocational suspension systems
  • OEM Fitment: Used in Freightliner, Kenworth, International, Peterbilt, Mack, Volvo, and more

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